Phthalates (50 µg/mL) on Rtx-440 (Extended List, Full Scan Mode)

	Peaks
1.	Dimethyl phthalate
2.	Dimethyl isophthalate
3.	Diethyl phthalate
4.	Benzyl benzoate
5.	Diisobutyl phthalate
6.	Di-n-butyl phthalate
7.	Bis(2-methoxyethyl) phthalate
8.	Bis[4-methyl-2-pentyl] phthalate isomer 1
9.	Bis[4-methyl-2-pentyl] phthalate isomer 2
10.	Bis(2-ethoxyethyl) phthalate
11.	Di-n-pentyl phthalate
12.	Butyl cyclohexyl phthalate
13.	Butyl 2-ethylhexyl phthalate

	Peaks
14.	Di-n-hexyl phthalate
15.	Butyl octyl phthalate
16.	Butyl benzyl phthalate
17.	Hexyl-2-ethylhexyl phthalate
18.	Butyl isodecyl phthalate
19.	Bis(2-ethylhexyl)hexahydro phthalate
20.	Bis(2-n-butoxyethyl) phthalate
21.	Dicyclohexyl phthalate
22.	Bis(2-ethylhexyl) phthalate
23.	Butyl-n-decyl phthalate
24.	Diphenyl phthalate
25.	Bis(4-methylcyclohexyl) phthalate isomer 1
26.	Bis(4-methylcyclohexyl) phthalate isomer 2

	Peaks
27.	Hexyl isodecyl phthalate
28.	Benzyl 2-ethylhexyl phthalate
29.	Bis(4-methylcyclohexyl) phthalate isomer 3
30.	Bis(2-ethylhexyl) isophthalate
31.	Bis(2-(ethoxyethoxy)ethyl) phthalate
32.	Di-n-octyl phthalate
33.	n-Hexyl decyl phthalate
34.	Diphenyl isophthalate
35.	Dibenzyl phthalate
36.	Diisononyl phthalate
37.	Di-n-octyl isophthalate
38.	Diisodecyl phthalate
39.	Dinonyl phthalate
40.	n-Octyl n-decyl phthalate

Injection
Column	Rtx-440, 30 m, 0.25 mm ID, 0.25 µm (cat.# 12923)
Standard/Sample	Phthalate standards mixture
	Benzyl benzoate (cat.# 31847)
Diluent:	Methylene chloride
Conc.:	50 µg/mL (80 μg/mL for internal standard benzyl benzoate)
Inj. Vol.:	1 µL split (split ratio 20:1)
Liner:	Premium 3.5 mm Precision liner w/wool (cat.# 23320.1)
Inj. Temp.:	280 °C
Split Vent Flow Rate:	3 mL/min
Oven
Oven Temp.:	150 °C (hold 0.8 min) to 200 °C at 5 °C/min to 275 °C at 3 °C/min (hold 2 min)
Carrier Gas	He, constant linear velocity
Linear Velocity:	48 cm/sec, 21.4 psi, 147.5 kPa @ 150 °C

Detector

Mode:

Scan

Scan Program:

Group	Start Time (min)	Scan Range (amu)	Scan Rate (scans/sec)
1	2.5	59-400	-

Transfer Line Temp.:

300 °C

Analyzer Type:

Quadrupole

Source Temp.:

280 °C

Electron Energy:

70 eV

Solvent Delay Time:

2.5 min

Tune Type:

PFTBA

Ionization Mode:

Instrument

Shimadzu 2010 GC & QP2010+ MS

Notes

The constant linear velocity of 48 cm/sec is equivalent to approximately 1.61 mL/min at 150 °C. The MS scan interval is 0.1 sec.

Acknowledgement

The authors would like to thank Shimadzu Corporation for their consultation with the operation of the QP2010 Plus GC-MS instrument.

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